Kurt,
When we started we used square, we also used paypal for a non profit thing we were doing (not sure what their firearms politics are), both were equal to each other in user fees, both give a free swiper, both have a simple app for the phone, both deposited in reasonable time frames.
Wink, with Costco do you pay a higher rate to enter the clients card manually? With others you always pay a bit more to do manually (security issues I suppose?) than in person swipes.
We had to move to a bank due to third party issues (square and paypal aren't banking institutions but third party which is fine for residential but govt. users have restrictions on this for govt. cards for projects we were doing so we moved to BOA which is costly, has a monthly fee, still just a swiper and an app, simple to use, but the fees!

Checking into another mentioned recently to see if it fits my govt. needs and if so, I'm on the move...
Square is being used widely, and the bulk of businesses and owners (other than those selling or marketing firearms) care about quality customer service, the costs and the product working and putting money in the bank, I don't buy stock but may just watch this for the fun of it, these folks likely are competing with many we haven't heard of and they made it to a very visible presence so I'd say though I'm sure they have losses from folks who have a high priority on gun control politics in our country, square is still one of the biggest kids on the block for ease of use and turnkey for entrepreneurs.