Searching for cost effective Gateway - advice needed

I'm searching for a cost effective (or lowest price) for a single node that I can use as a gateway to a home router.  I'm using several Bullet's, M2's, M5's, AiirRouter HP's and a couple AirGateways and 2 M900's.  I'm looking for the absolute simplest lowest cost device to use as a gateway to a home router and connect a relatively short distance to the nearest node (~100 feet) which is on 2.4 Ghz.   I don't think the home router supports VLAN.  It sounds like most of the UBNT devices that have one Ethernet port require a VLAN capable router to get a WAN connection -- which obviously bumps up the cost.  I generally try to stick with the UBNT HW but wonder if the TP-LINK CP210 with 2 Ethernet Ports would be a good option.  My next consideration seems to be the AirRouter (including HP), but I'd prefer to use Hardware that I can use Outdoor.  

Thanks for any advice provided.