my so called guess work may be more accurate than you think?
record companies inflate sales by a mile, now deadringer has most likely sold more than 3m ww, but the 3m figure i came up with are based on certifications around the globe! now record companys are slow at updating at the best of times [ so it needs to be updated ] not too sound harsh, but i have been researching charts and sales for years, and have made great contacts in the bpi, riaa, ifpi, etc etc!!! deadringer has sold 800,000+ copies in the uk, but still has only 1 platinum certification? this shows you are correct in saying that sales are hard to come by! but my above list is based on certs [ thats all ] i can post 23 million sales for deadringer if people want?
but if you want accuricy, well

forgive my spelling

if you have sales for more meat albums in the uk send them to me please [ its prob the same as i have, but would be interesting ]
bat 3 could have shot up the charts if blind as a bat was released [ not huge sales, but sales ]