Dude, all you need to do is just stack yo paper for a while until your able to afford something good. Trust me. You'll avoid alot of buying! For right now, check ebay for some condenser mics and see what they got. If nothing decent is for sale, get you an sm58 or something for right now. Save up for something atleast in the $200-$400 range. For $300, the shure ksm27 will give the exact sound you want for hip hop vocals. Also, make sure you do alot of research on stacking your vocals and mixing. That will go along way. I made some great(content wise

) recordings back in the day with a $20 radioshack mic, acid pro, fruity loops, and a yamaha keyboard. If you got talent, people will still like your songs. If you can make a decent sounding mix with cheap equipment, you'll appreciate the expensive alot more when you get it homie! Keep makin music. God Bless.