Squier P bass or J bass=$200
Roland Micro Cube Bass RX Bass Combo Amp=$250
Neotech Mega Bass Strap=$30
Dean Markley Blue Steel=$20
Live Wire 1/4" Angled/Straight Instrument Cable= $15
Gear One G40DX Headphones=$15
Musician's Gear Tubular Guitar Stand=$10
Set-up at local music store=$25-$50
Grand total=$500-$650 (if you buy new or used)
You can't really go wrong with a squier or Ibanez. I put the bass amp on there becausr I assume you are not in a band and want to learn how to play bass. I wish I had the because it has a tuner,effects and a drum beat thingy. Once you have yer gear and it's all set up and you absoulutley hate it, you could sell it for about 60% on Craigslist. Also you said you are a guitar player, If you have a stand,head phones,cables and straps that will save you a bit of money. I hope this helps. I really wish someone would have set up and put new strings on my first bass when I got it, Would have saved me so much trouble.