Why cuts into vinyl covers?

I just found a slit cut-out copy of a Philips classical LP among my vinyl. Nielsen and Sibelius Symphonies. Recorded live at the famed Concertgebouw in Amsterdam. Of course, I hadn’t listened to it in probably 20 years. I barely knew it existed. It has a $4.69 price sticker from what I believe was Freak Beat Records on Ventura Blvd in Sherman Oaks CA. Anyway, it sounds absolutely excellent despite being a digital remastering. Compelling music and compelling live recording, including applause. A typically dead silent Philips pressing. What can I tell ya?

I recently purchased a record, Joni Mitchell Mingus, on eBay from a record dealer. When received it had a hole-punch in the corner. I looked back at the ad, and the front pic had a price sticker on the outer sleeve covering the hole. The sleeve it came with, no sticker. The other pic showed the gatefold open with the front  and back corners (with holes) conviently out of the pic. I messaged the seller and he explained that pic was an old pic of an other (same) record he sold previously. 🙄

I have seen label covers stamped promo ,but the album itself was not a white promo.I think different companies did there own thing.Back in 1977 I worked in LIC and there was a Record Store who sold promo  copies.He sold them cheaper so I didn't  care if they read not for sale .