Caterlynx not honoring a sale

I was looking for an ice machine on Bid or Buy, and came across Caterlynx add on an industrial ice machine and bin, ordered and paid for it in full, together with the shipping cost as advertised by them on Bid or Buy, now they don't want to deliver the advertised product to me, claiming they made an error on the price, which is not my mistake, so i suggested to them that i will be happy to take a much cheaper one, and they still don't want to honour the sale, without me paying the difference. Why should i pay for their mistake, blaming Covid for retrenching peolpe and thus the reason for their mistake. Wouldn't recommend doing business with them at all, because Jose Agrela doesn't want to come to terms of handling a situation and only wants his way. I never had any problems using Bid or Buy previously with any other supplier ever, until i came across Caterlynx and Jose Agrela who doesn't want to honour a sale on something they advertised at a set price.