those are good bargains! i managed to find my towered VBS and 8 spider gears for $550, and i thought that was a great deal (considering brand new, all of those parts are around $1k). i think what put me over the edge, though, was the last part i needed: the lightning chassis. i had to buy an entire SuperMaxx roller just to get it, and sell the other parts off.
bye bye savings! lol.
the good news: you have an incredible truck and it's going to be so worth it when you finish your build. others may say the maxx platform is outdated, and i agree in stock form. but a UE truck is still like no other.