May be
https://www.altilly.com/ will do? You get managed PXC added here, it will be easier compared to trying completely new exchange.
Or other good candidates?
Listing at Altilly isn't that expensive:
Silver Listing Service
Fee: 200,000 XQR
2 pairs
Listing with the following pairs
XQR + (BTC or DOGE or ETH)
+ twitter announcement
200k XQR is about 0.05 BTC at this moment...