not too surprised
Some of the cheapies are worth trying, especially if you are going to use a large number.
Last year, I got a handfull of Sky Mexico (new, surplus?) LNBs for somewhere around $6..7 (see my sig).
I thought they were okay, so I sent one to Linuxman for evaluation.
They proved adequate enough that he got a six-pack, I believe.
SatelliteAV sells the little GeoSat Universal Mini for $10 on his site.
It's no slouch, and great when you need to get two LNBs really close together for nearby birds.
For those of you wanting Standard, PM me.
In the review section, there's a cheapie for around $15..16 shipped. (Megasat? Coolsat?)
It looks like a DirecTV LNB, and has a rectangular base.
So, for some silly experiments, using junker DTV dishes, it fits right on.

But even if you mount it by the neck, it's got
two outputs, and sometimes that's worth a -lot- !

Don't recall if they were Standard or Universal, but -not- circular!
Several members are using recycled Dish Network FSS bandstacked LNBs.
JerryT in Florida, for one (search his posts for pictures and discussion), and maybe Tron.
They can often be picked up for little or nothing.