I'm buying artifact planets - just 1 or two to keep me going until my next scan run.
Buffed, I have 3K invasion attack (ish). I'm also a saboteur, meaning I can weaken a planet.

VL+, Ex Rich+ or smaller with multi mega production.

I can offer:
Mining and research planets (Lots of, I have a very nice, fairly weak mining on offer)
Structures, including a captured crimson base
CTP, Ku and EM
Around 20 of most types of artifact.

PM me offers.