I work at Tucows Domains/Hover and we're digging in on what happened here. I've reached out to the OP already via email. tl;dr our support team didn't handle this well at all and we've already issued a full refund.
We are still looking into where the price mismatch found its way into the picture, but that domain is a tiered price domain but it is also "legacy" priced meaning it should renew at something very close to the standard price for a renewal but didn't.
We are still looking into where the price mismatch found its way into the picture, but that domain is a tiered price domain but it is also "legacy" priced meaning it should renew at something very close to the standard price for a renewal but didn't.