ok - for the record, £160 is cheap for a 2x2 MIMO outdoor wireless link - especially if you factor in your own time saved compared with getting things working with separate external antennas and pigtails.
I used to think this was expensive before I saw what the other commercial stuff costs.
Setting aside any legal concerns if you do form your link with 2.4GHz but have to use high power levels to get a link going (e.g. to compensate for antenna issues), you may interfere with your own indoor wi-fi at each end (even on non-overlapping channels).
I suggested the linked items
* true LOS at this relatively short distance means you don't need the tight beamwidth of dishes so alignment is trivially easy
* they are very lightweight so mounting is easier e.g. can be cable-tied to vertical gutter poles - some prefer to use steel hose clamps (jubilee clips) to secure things more permanently
* configured with the built-in web UI so you don't need special client software on a computer
* they run linux so you can still
experiment or flash your own firmware if you really want to
As far as I can tell the auction kit you listed is all indoor models and mainly aimed at providing local access point / router service but if you can flash them with open-wrt / dd-wrt or similar you might have more luck in making a point-point link compared with the manufacturer firmware.
To be clear if you goal is to spend time enjoying an operational network I'd still get the stuff designed for the task, but if you are up for the experimental approach and are more interested in learning about how the stuff works instead I'm not knocking that!
prompt $P - Invalid drive specification - Abort, Retry, Fail? $G
prlzx on n e w n e t: ADSL2+ / 21CN at 3.5Mbps / 800kbps