Low cost LTE router with built in wireless

I'm looking for options for a low cos LTE router that has build in wifi to used on US based LTE networks. Support for both AT&T and VZW in same unit is ideal, but not required.

I'm effectively looking for osmething a little more robust than just buying an AT&T hotspot device/VZW jetpack device. I know CradlePoint is the gold standard but looking for lower price bracket where I can reliably have up to 20 wifi devices connected (although more typical number would be around 10).

MikroTik LtAP or wAP seem like they might be a good fit, but I have zero experience with them or MikroTik in general.