Reddit mentions of Ubiquiti NanoBridge M5 22dbi 5GHz MIMO Bridging Solution with airMAX TDMA Protocol and InnerFeed Antenna Technology (NB-5G22-US)

Here are a few shitload of links/info:

• RB411. It's basically a small router with one ethernet (PoE capable) and a MiniPCI slot. I've bought these on eBay for $20. Brand new they're around $40.
  
  
• CAOTS. A waterproof case for the RB411 (and many other boards). If you're doing stuff indoors there are cheaper metal cases (~$20 eBay) available. It comes with a waterproof ethernet jack and plugs for the holes. You will have to find your own antenna connectors (usually MMCX to N).
  
  I've bought some of those things new before from Streakwave since they have a warehouse in my city and I can get stuff same-day if I pick it up.
  
  
• Ubiquiti XR9. It's a 900MHz MiniPCI card. They are basically a 2.4GHz 802.11G chipset with a transverter and some filtering so they run at 900MHz. I've had alright luck with these. I've bought them used on eBay for pretty damn cheap (~$45/card?). These are pretty popular with WISPs so availability should be good.
  
  
• Xagyl XC900M. Another 900MHz MiniPCI card. The Xagyl brand isn't as popular as Ubiquiti but their product is superior. I don't have any of these cards but I do have the slightly older FLR9G30 and I think it works better than the XR9 cards. I think the XR9 will work with the FLR9G30.
  
  
• Xagyl XC420M. If you're a ham these should be of interest. They work in the 70cm band in the ATV part of the band. Legality is questionable because of symbol rates but these are the best cards I've played with. I've done a 1.2 mile mediocre-line-of-sight with omni antennas (with one being in a window behind a mesh screen) with these before. Only downer is they were ~$180/card.
  
  I've got a handful of routerboards, cases and cards (but not enough antennas). I've not spent much time actually trying to mesh them (802.11s? adhoc with batman/OLSR?). I need to make more friends in my city to try and setup a mesh. Cincinnati is too damn hilly.
  
  I've used a bunch of antennas for 900MHz. Big grid antennas, little magnetic omnis, panel antennas with varying amounts of success. The grids are hard to aim, the other stuff doesn't always have enough gain. Sometimes the noise in the 900MHz band is just too much.
  In the 70cm band I've mostly used a big pair of Diamond antennas that kick ass. I've been meaning to pick up their 900MHz equivalent (Diamond antennas rock my socks).
  
  
• MFJ 1908-HD. It's a big telescoping fiberglass mast. I got mind from R&L since it was cheap and I could pick it up at their store (didn't have to pay for freight shipping). I use one of these for messing around. Toss a radio and an antenna on there and see how far you get. If you have a second story house I'd slap stuff up on the roof. Otherwise find a tall tree. Altitude (and LOS) with radio links is a deal breaker.
  
  Another area I've been meaning to explore is 5.8GHz equipment, in particular the NanoBridge M5. If you have absolutely perfect LOS (can see your target, no obstructions) these things should kick ass (from what I've read). I just haven't had the time or a place with good LOS to play with these so I haven't bought/tried any yet.
  
  If you end up picking up any gear and need help feel free to pm me. Also I'd recommend getting at least your Tech level Amateur Radio License (or your country's equivalent). It's not needed (except for that 70cm stuff) but you'll learn a lot in the hobby.

Instead of the nanostations, I'd suggest these: http://www.amazon.com/NanoBridge-Cost-Effective-5GHz-22dbi-MIMO/dp/B0055PKSCK

Yes, you say price is a cost. These work without tinkering, and the cost of the internet you are not paying for, will cover the cost of these in just a few months. Plus they will be substantially faster.

http://www.amazon.com/computers-accessories/dp/B0055PKSCK

It's more of a standard product (as most people don't need 1.4Gbps) so you can find it from a number of vendors. This amazon link was just 3rd google result (after the datasheet and the page I linked above).

If you don't want to piece together kit I suggest using NanoBridges.

http://www.amazon.com/NanoBridge-Cost-Effective-5GHz-22dbi-MIMO/dp/B0055PKSCK

or

http://www.amazon.com/Ubiquiti-Nanobridge-M2-18-Outdoor-2-4GHz/dp/B004GAY1PU

I use these on a number of commercial installations. Easy to setup. Easy to manage. They are about $90 each, so if you have a lot of free time and junk laying around you can probably DIY cheaper, but if you want it just to work I suggest kit like this. They are water and UV proof and can be outside mounted and powered via POE. They work as a bridge so very little network configuration is needed.

Honestly, your best bet would just be to go buy a couple of the Ubiquiti Nanobridges in 5Ghz and link the two sites together. Put them in a transparent bridge mode and it will do exactly what you require. As long as you have line of sight, you will actually have to turn down the gain because these are so powerful. They run about $180 for a pair on Amazon.

Seriously, don't try to build the antennas yourself.

You mean the Nanobridges?

http://www.amazon.com/NanoBridge-Cost-Effective-5GHz-22dbi-MIMO/dp/B0055PKSCK/

Or some other product?

I would use 5ghz, less interference and you can use wide channels for more than double the throughput.

I second the vote for ubiquiti, but for a PtP installation I recommend the nanobridge over the nanostation at a similar price point. The Ubiquiti Nanobridge M5 22db is the unit that you want: http://www.amazon.com/NanoBridge-Cost-Effective-5GHz-22dbi-MIMO/dp/B0055PKSCK

Do a site survey and pick your channel, 40mhz channel width, and leave airmax turned on.

Power lines shouldn't be an issue, but wireless can be very picky sometimes.

Your going to need line-of-sight access to the building that has fiber. Either pay one of the residents for their internet or talk to the building owner for access possibilities. The best solution to connect would be a pair of 5GHz directional outdoor dish antennas(rooftop on a pole would be great). A pair of these would be the best solution.
Those may look expensive, but if need a good quality and reliable connection, those are the way to go. read the reviews. You will need some networking knowledge to set these up, but once they are connected they will stay that way.

problem with that range extender is that it is not outdoor rated. I doubt it will work well or at all with that you are trying to do. I don't know where you are but I recently ebay'ed a ton of used ubiquiti gear for a small WISP project. I have.... maybe 30 miles of wireless backhaul that cost less than about $800. Talking nanobridge, nano station bullets dishes and 5 bridges so 10 points. I have 9 years wireless experience and if you are broke and need something that will work properly, ubiquiti is the way to go. There are other options, like mikrotik but I have been very content with the performance I have seen from ubiquiti.

Cant you go to amazon and have something shipped? Heck couldn't you have it shipped someplace and then go get it?

http://www.amazon.com/NanoBridge-Cost-Effective-5GHz-22dbi-MIMO/dp/B0055PKSCK/ref=sr_1_3?ie=UTF8&qid=1394678639&sr=8-3&keywords=ubiquiti+nanobridge