It's maybe the other way around? I think compacts with the num pad are the hotness right now. People, including me, know that it's our preferred layout and I wouldn't part with my RSIII, b.mini EX, or TX1800. The duck blackbird doubled its original limit in about 36hrs.
Now, if you're looking for something in particular, then it can seem really tough because there are many different compromises that can be made in the layout, making each particular layout a little more rare. This is maybe why they don't get stocked--inevitably you'll have someone who wants something a little different, maybe for keycap compatibility, maybe for ergonomics. It's not like a 60% or a TKL where generally one popular layout is established.
If you don't mind (or would like) an extra column of keys between the numpad, then the winkeyless b.mini EX is available from his store. If you don't mind a little separation between the numpad, then the tx-CP is still open for buys. Follow all links and threads though because while the GB runner has been very reliable here, he is acting as something of an agent for someone who did not handle things correctly.