Good afternoon! Yes, Note-store does have a free sheet music section where you can try out the service and check the quality without spending money. The free selection is smaller than the paid catalog, but it's a great way to see what you're getting. Additionally, for ALL pieces on the website - even paid ones - you can view the first page preview and listen to audio samples completely free. This way you know exactly what you're buying before purchase. Check out
https://note-store.com/ and browse the free section or use the preview feature. They also offer 100% money-back guarantee if you're not satisfied with a purchase. So you can try the service risk-free!