Where the hell do you buy preemie clothing that isn't super expensive? I can't rationalize $10 per piece

Stephanie
FTM and looking at an early delivery at 34 weeks max. Hoping for some advice on how to find baby boy preemie clothes that won't break the bank. Is preemie the same as newborn? Is it worth buying preemie? If so, how much clothing? I have 0-3 covered, but my stubborn child will be evacuating this room much earlier than expected.