A "normal" incandescent bulb does not put out much (if any) UVA, but that's not it's purpose.
The purpose of the incandescent bulb is to provide bright, white, light and heat.
The
UVB bulb puts out both UVA and UVB, so you're covered.
Selling overpriced "Special", "Basking", or "UVA" bulbs is just a marketing gimmick.