Picked up a used 6s from a reputable seller on ebay. Screen is perfect, couple of small nicks on the case. $150. Sold my SE for $100. Nice upgrade for $50. I think this is the sweet spot for a cheap iPhone right now.
Not bad but the SE and 6s share the same processor and as a former SE owner I found it to be faster than the 6s that my GF had but it’s still a good screen upgrade if that’s what you was looking for
Enjoy! I just picked up a 32g silver s6 myself on eBay for $100 (including shipping). Great phone so far and I've only had it a day! Still trying to learn (unlike you this is my first iDevice). Great deal on the one you got though, especially since you were able to sell your old at a nice price.