The Hudys are available one at a time. Usually around $18 and you only need 2. Three if you count the Zenith.
Check Amainhobbies. In my days of R/C I learned not to trust cheap tools. Wiha is another more affordable option but of high quality. Don't buy Chinese tool and hope for longevity.
050 for Atomic
Hudy US Standard Allen Wrench (0.05" x 60mm) [HUD125020] | Radio Control - AMain.com
.035 for cyclone and narrow pin variants
Hudy US Standard Allen Wrench (0.035" x 60mm) [HUD123520] | Radio Control - AMain.com
MIP/thorp and EDS also make fantastic drivers of appropriate sizes.
MIP Hex Wrench - Metric Tools | Page 1 of 1
RC TOOLS AND ACCESSORIES - EDS RACING PRODUCTS ONLINE STORE
curious... do/will you have magmas (authentic or clone) and what's your pricing on them. sorry. didn't quite read through the whole thread.