Dante/Silver7,
From what I have seen it looks like the lower the requirement, the bigger the book. Would you agree?
I have seen x 10 in the past and these tend to the books that you wouldn't trust with your loose change let alone your hard earned cash.
UK books are usually turnover x 1 apart from a couple who have a US customer base, where it tends to be x 2.
Where is the balance though?
Do you prefer x 2 and get tempted to cash out quickly or x 5 so you can have a real trial of a sportsbooks software?