You fill out an online form and a sales associate will email you with the price. I had two safes priced and with shipping to curbside, they were roughly 50% off the MSRP.
Some models are cabinets, but most are either a gun safe or a gun fire safe. Sentry is a good middle of the road safe. You can certainly buy better. I’ve evaluated my risk and the Sentry is the right price point for me. I’m not storing any guns that my insurance can’t replace.
Both sentry and stackon make the cheap cabinets, and I believe that both make somewhat better “safes”. None of the low cost offerings are that great, but they will deny access to a child and slow a burglar down a little bit. better than nothing.