Excellent question....
Would be great to post the participating firms...groups...and email addresses...technology names and monthly costs...takes foreign clients...charges monthly or does not charge monthly for capital or software...offers 1 cents or less per share all in or less...minimum ticket rates if any...paperwork online, not online...accepts $1000 to $10,000...wiring fees..capital leverage 4,5,6..10 to 1..etc..etc...