no it's not, the chain ring is worth about $50 new on ebay buy it now, at auction the blue messenger rings got for $35 shipped while the black go for around $45. the sugnio RD2 crank arms go for $90 without a chain ring, and $120 with a basic chain ring

with an MSRP sticker price of $149.99 (fake price, lbs price nobody pays)

$420 to your door, that crank set isn't worth $210.
media blasting a bicycle frame isn't cheap and the my $300 media blasting cabinet won't fit a bike O.o have to that that **** to a shop, and booth rental isn't cheap