If you can't afford a real one, just fake it with a blanket!
Blanket Cape price in Growtopia: sells for about 90 WL, buyers pay about 40 WL (median of 835 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: LVKHU, LQMARTS, SHOPANCESTRAL, LEIGEN, YEYRT