Hi George,
Yes, the cheap Axminster toggle clamps work very well. I have some (Type B, rather than the Type A, & in the two smaller capacities.) I am very happy with their performance on the small work-holding jig I'm currently using them on.
They seem sturdy and well enough made, and they do what they are meant to do - ie hold things down firmly with no fuss.
My partner thinks they are a bargain, btw, and I hadn't realised how expensive other toggle clamps can be until he expressed his pleasant surprise at the price of the Axminster ones - and I then had a look at offerings from other suppliers.
I actually bought mine from Axminster on impulse as I was after something to make my order up to the £50 that qualifies for free shipping!
tekno.mage