There are a few other prop firms who have international presence. As far as I know, WTS still operates internationally (even though they sold of U.S. business to T3).
Depends on the firm. An example respective of each scenario you listed:
0, some firms won't back new traders, only traders with experience and successful track record
200k-1MM
2MM++
Do some deep digging on the firm who offered you S57 sponsorship. Look at what kind of training they offer; typically a firm where your money is first loss won't be investing in with you through the training, but selling it to you as a product, if the firm is backing you fully and willing to...
A prop can only trade an IPO once shares hit the secondary market. You can always get the primary delivered into your outside retail brokerage account.
The Feb 2017 release was the settlement of the civil suit in which the SEC tried to pursue the brothers personally for the old fines of the company Hold Brothers (essentially a collection case); this was not a new fine. The judge struck down the SEC's motion to strike which resulted in a...