welcome to cpf ledahoic.... normally we all warn you to hold on to your wallet. but I see it's too late for you
Resale value while important is not the overiding factor to buy.
for me you really should like the light AND have good resale value too.
the more time on B/S/T you spend, the more you will get comfortable with resale values. now if we can get more folks to leave sales price alone!!!
for me knowing you can get aprox same $$ out of your light. should you decide light is not for me is an important factor.
traditionally ARC's and Surefire lights hold values the best for productions lights. HDS and Gladius are among the worst for holding resale value.
custom lights are among the trickiest to figure out. McGizmo lights traditionally hold resale value the best among custom lights. Arcmania lights have been dropping in value lately, except the older KI lights.
very few chinese lights hold their value. there are few rare exceptions. fenix stainless L1+ have increased in value.
ti lights of any flavor have done real well. but price of entry can be higher.