I try to stop acquiring engines.. but..
NIB OS .15 FP

AME .061 FF/CL
AME .061 R/C with tank mount
Dragonfly .049
1 engine out, 4 engines in - keep this up I'll hit 2000 yet.
That's a great deal for both sides..!
I dare you to build a 18" x 18" square, cellophane covered PBF for the Dragon Fly. [Use all 1/4" x 1/4" sticks]