Seller did not disclose HOA fees

[Heshel Mangel]

I am under contract on a home, where the seller did not disclose any HOA fees (claimed there was none), and now in the appraisal report obtained from the bank, I see there is HOA dues. It is not much, but still comes with all that is HOA (including incidental fees, transfer fees, etc..).

Any suggestions how to proceed? Should I back out because of that discrepancy? Move forward? Negotiate with seller?