@KenanJ, is that price in USD? If so, recent Supreme and Artist sale prices have ranged from $4,000 to $6,000 USD; which would contextualize $3.5k as being a low asking price. If not USD, you can convert the prices I'm presenting:
Based on current and recently ended listings, speculators willing to overpay for Flys of all SKUs advertised as being in "mint" or "excellent" condition (even when the condition is
misrepresented) appear to constitute the bulk of sales
and asking prices exceeding $4,000, with sales ranging from $2-4.5k being all over the place in terms of condition, and competing listings in the lower range of prices ($2-2.5k) appearing to sit for longer - ostensibly a consequence of attracting less speculator attention.
So, depending on which currency your Supreme is priced in, you could either be acquiring a more popular model for a "good" price, or overpaying as a consequence of international speculators competing for Supreme or Artist models having driven prices up in recent years.
For additional context: Having owned and deliberately sold a Supreme below market value (the buyer still ended up paying close to $4,000, due to sales tax), I don't feel the cosmetics or increased weight of an all-maple body necessarily justify asking prices in the aftermarket being two or more times that of Deluxes, Classics, or Mojos (something I primarily attribute to the Parker Guitars aftermarket being niche and speculator-driven).