cheapest and easiest now should probably be the fell oak. the club is the cheapest base item to gamble for of the tc3 uniques, and you have the 1 in 2,000 odds right at lv 1. honestly, this was probably ALWAYS the cheapest and easiest to get. just no one wanted it like they want gull daggers. lol
Lenymo would be cheaper... if you could get it at 1 in 2,000 odds before level 15.
Same with hotspurs, which you need lv 12 to get the 1 in 2,000 odds to gamble.
Yes except moving 1.5mio gold when char can hold 10k (since you mentioned the clvl 1) I'm not sure that is fastest.
Unless you multiboxx/buy the gold to someone and they purposely drop said gold at Gheeds' feet, then that might work.
I think that is the only bottleneck to that clvl 1 strat.