Alternatives to Flippa

I wondering if there are any serious alternatives to Flippa for website sales and auctions? It seems like they have the market sewn up, but its not cheap to list sites there that you dont expect to achieve mid 3 figure sums or greater.

I just need a space where I can list websites for sale that dont necessarily have significant traffic or sales records, but hit upon good ideas which people may wish to take further.

In the past, I have tried various domain forums as well to sell both websites and domains, but that market seems to be slow.

I will definately be listing on opportunities.io, but the more the merrier and preferably with zero or low up front listing fees.