These resin molds by #TheZemooonStore are very well made. I love the square shape of these coaster molds and I love that I can make several coasters n glue them together then seal them with a countertop resin to make hot plates and serving trays. you get 4 reusable molds for $14.99 which is a reasonable price. if you're getting into resin this is a great way to do it. I highly recommend this set of molds from beginners to experts.