Side Bet in 3-Card Poker

I visit Biloxi Casinos often...several of the casinos have a $1 side bet in their 3-Card Poker games. The side bet would get the full 'pot' total, IF you draw a SPADE Royal, it would get you $500 in any other Royal, lesser amounts on other hands. Someone recently hit for over $19,000 at the Imperial Palace for drawing a SPADE Royal and having the side bet. How high does the 'pot' need to be before it is recomended to play it?
Thanks for your comments. Newell

From wiz of odds 3 card poker it is

Quote:

To breakeven the meter needs to be $11,520, less $175 for each other player.

Shuffle Master also provides another paytable (it also pays for a straight), and it would have a differant break even point.

Hand	Pays	combos	Probability	Return
Spade Mini	10080	1	0.000045248868778	0.45610859728507
Mini Royal	500	3	0.000135746606335	0.067873303167421
Staight Flush	70	44	0.001990950226244	0.1393665158371
Trips	60	52	0.002352941176471	0.14117647058824
Straight	6	720	0.032579185520362	0.19547511312217
loser	0	21280	0.96289592760181	0
total		22100	1	1

With this paytable the break even point is $10,080 less $175 for each other player

miplet, Thanks for your speedy reply to my question. Newell