Got an MSI 3060 TI from him. He provided all the necessary product details, benchmarks and pictures.
The initial unit that was supposed to be exchanged turned out to have some irregularities, and he promptly provided an alternate unit. Apart from that, he addressed all concerns I had, and agreed to take steps to protect the buyer's interest.
Shipment was done according to agree-upon timeline, with relevant updates. Product was packed very well, and works as reported and expected.