I know i am a little late but i thought i would chime in. I just recently got bit by the tackle bug. It was going to be a simple little hobby of me tying a few jigs for me and my son. I ordered heads from Sieberts and Cadman ( both are awesome to deal with btw). Ordered some skirt material, made a fluid bed and ordered a vise. Well that was fun so i bought some more jig heads, more skirt material, bobbin, thread, more paints. Now i am shopping for a melting pot and molds. It is an addictive habit ! But i would buy pre-made heads until i decided for sure this is what you want to do. And ask the guys on here, they are very helpful and can lessen the learning curve tremendously. and as for your original question, going the pre-made jig head route you would probably have around 125-150 bucks in basic materials to tie around 50 jigs. Jig heads are around .60 each pre-made, $30 in a fluid bed, skirt tabs around .20 each ( i use 3 per jig), paint around $8 per color, some thread or wire, pliers, a toaster oven from the thrift store for $15 and you could start tying.
