It would seem that I very much SHOULD have paid attention to those next two emails, because in both the three and one day renewal emails the price changed from $38 to $3000. Needless to say, I was surprised when I was billed $3k USD (plus tax).
After contacting Hover's customer support, they told me that there was nothing that they could do about this and they have a no refund policy because "Hover does not have the ability to override or reverse pricing set by the registry. Premium domain pricing, including renewal costs, is determined by the registry, and they may adjust those prices over time. Once a renewal has been processed, we are charged that fee immediately by the registry, and those charges are non-refundable to us."
So according to Hover, the .sexy registry (Uniregistry) sets prices as it sees fit, decided to jack up the renewal cost at the last minute because they can, and there's simply nothing they or I can do about it. Has anyone here experienced anything similar?
BUT, before you do that, threaten a chargeback. That might unstick their support or get your case bumped up the chain. If they still refuse then transfer and chargeback.
Did you read the ToS? The ToS states they renew at prices mentioned on the website. I can find .xyz to renew at $19.99. Now get your screenshots and get your money back. (I’ll correct myself transparantly: this is not very clear from the ToS. Prices are in USD and from time to time they can limit the number of domains at that price. That says little about the price at renewal.)
ICANN started selling gTLDs in 2012 and they are not cheap, costing hundreds of thousands to procure, plus tens to hundreds of thousands a year to maintain, which is why prices for domains on that gTLD are usually pricey, too.
There's probably not much you can do, as you need to dispute with the owner of the gTLD, not the registrar, but in the future I recommend switching to either a traditional TLD (e.g. .com, .org, .net, etc.) for the lowest price or a country code (e.g. .io .tv .gg, etc.) which is usually pricier than a traditional TLD but much cheaper than a gTLD.
However, technically, registrars are gatekeepers - you just rent domain for yearly fee. And they can change price policy any time. Or do wherever political tendencies says.
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.