Complex sentence: Demo's of the album were made in early 1975 before the large recording contract with Mercury Records was reached in late 1975 and can still be found on eBay but does not have the added guitar solos of Tommy Bolin to the songs.
Split into simpler sentences: Demo's of the album were made in early 1975 before the large recording contract with Mercury Records was reached in late 1975. The Demo does not have the added guitar solos of Tommy Bolin to the songs.