He was responding to OP's claim that the M10 is ridiculously cheap, and pointing out that the cost is on par with the Stug G. OP probably wants all allies call-ins tied to tech but all Axis call-ins left alone.
Please add the 0 fuel Tiger Ace to your list. Nothing like this ever gets addressed unless someone like you says it is BS.
800 MP
17 CP
Only one, so once it's gone that's it.
The entire time it's active, all your resource income in hampered.
Yeah, it's a really good unit. But it's not godlike.