I have buy an set from Hudy in the past. Starts with 1,5mm, 2mm, 2,5mm and 3mm.
For "-screws I have also a set from Hudy. I broke in 5 years just two 1,5mm blades.
But that was no problem because here I could by the blade separate. So I have some most usable blades as spare part in my box.
I have learned: Do not save money in case of tools, because cheap and garbage tools will damage the screws and you have more work and costs afterwards.
Regards,
lonee