I own a couple of covers, and I can say it is worth the money. Some of the covers are really nice and have cute art and at night even though it is dark you memorize the artwork on the pillow. The covers can be very soft and feel nice on your legs and face if you death grip it. I want to get perfume for mine but I have not gotten around to it. Some of the artwork makes you want to pat your pillow on the head. Also get the 50x160cm sized covers, I am 5'4 and I can wrap my whole body around one this long but the 50x150cm I don't get pillow on my feet anymore.
Here are a couple of covers sites
This one I have used and its ok. But the covers are cheaper on aliexpress and their selection is not as good as the bootleg stores. The whole point of this site is accessibility to the western market, so quality and price is not the best.
Anime Dakimakura Pillow Shop Is The Largest Anime Body Pillow Shop. We Offer Dakimakura, Waifu Pillow, Onahole & More. Fast and Free Shipping. Buy Now
animedakimakurapillow.com
This one is new and I plan to get two covers from them to try them out. They say they support the artists directly
cuddlyoctopus.com
Here are a couple of stores on aliexpress. The covers are cheap and good quality, bootlegs though so no money goes towards the original artists. Just note that they are having shipping problem from china because of beer virus.