You seem like a nice young man, out of interest, do you use any type reinforcement in making yr concrete tiles ? Fiberglass, chicken wire, steel mesh ? I'm a builder and I'd think concrete tiles wouldn't be very strong or damage resistant.
We don't sell too many tile molds, it isn't typical. Usually, we sell molds for faux stone, wood and brick. Also steppingstones. If using concrete for tile, Id recommend using PVA fibers and CSA cement for faster demold time- globmarble.com/csa-cement-fast-additive.html