You're probably looking at getting liquidated at a $4 difference so it's really not something bitcoin can offer.
Bitcoin isn't a traditional asset, it's a bit more volatile and less likely than some to go back up to a certain price within a certain about of time which is why an index of different bitcoin prices have to be used by futures exchanges... I doubt anyone could run a successful exchange based on the index or last price and allow for 500x leverage without you realistically speculating on about 8 different exchanges markets at once...
I really appreciate your response but I am way lot cautious in terms of getting my account liquidated. I have almost blown my account for more than a dozen of times and it has taught me a lot. Now, I never afford taking a trade without a tight stoploss. I don't care if my stoploss hits as soon as I place my order but it makes me bear less loss as compared. Currently I am trading with 125x leverage on binance and you won't believe but I am not risking more than $6 per trade. Is'nt that a tight money management and even if my position gets liquidated, it won't affect me as I always use isolated positions instead of cross.
If I get any exchange offering 500x leverage than even at that exchange I would not be risking more than $6 no matter how much profits I have so let's assume my buying power would be $3000 if I choose 500x leverage. Currently my buying power is $750 only.
I never care about the liquidation price as always I have my stoploss with me to help avoid excess loss. I have my own strategy, risk management, money management well planned which makes me confedient with trading with high leverage. I do firmly believe you that high leverages can quickly make accounts liquidated but it is not true each time if you are well trained. High leverages can be a lot beneficial if you know how much to risk.
edit: Just like my current position with 125x leverage :
http://imgur.com/a/SUfOmuW (not mentioning the image directly as it has my referral id and here it is not allowed to directly post your referral id)
Because I know when to open position and when to close it. I have literally killed my greed & fear.