Maybe cheapest total costand one of most recent electric F3A plane close to 2M (but not really full 2M plane) is Sebart MythosS 125E. With that plane You can use 6 cell LiPo and keep the battery cost down compared to a 10 cell 2 x 2M plane.
I'm assemble a MythoS 125 E now and it is great quality. I plan to use 8 cell Lipo (and Hacker A60-7XS motor) to get little extra punch in windy conditions. For 6 cell Lipo You use Hacker A60-5XS.
I believe
https://www.aero-model.com/sell Sebart and Hacker motors in US if You are interested in that combination.
http://www.sebart.it/F3A.html
A second hand 2x 2M Sebart Wind S Pro should be a good choice also. Many F3A flyers in my country use it and some flyers here have got the new Sebart MythoS Pro 2x2M now for this season.
/Bo