polygonum wrote:
Have just run out of the hot melt glue sticks that came with my hot glue
guns - both 11 and 7 mm.

Not being a big user, this is the first time I have had to buy some.
Suddenly I realise that I have no idea if I should just look for the
cheapest? Or some particular make or type? Any good sources?

You need the glue for the materials you intend to use and whether it is
for permanent or temporary use. Some have longer open time than others.