As a disclaimer, I own several SWK Kilts, but I'm not affiliated with them, and they are one of the X Marks Sponsors:

http://stores.channeladvisor.com/Sti...20Accessories/

For a grand total of $14.95 (plush shipping and handling) you can get an entry level sporran from SWK. (And it comes with a 43" chain.)

Spend $9 more and you can get their SWK Nightstalker Nylon Sporran.

Both of the above items are an excellent value going as an 'entry' level items go. With an entry level kilt, an entry level sporran, some socks and flashes you could possibly make it at right at the $100 range.

The entry level sporran isn't bad, is readily identifiable as a sporran (and you won't mistake it for something else) and you can hold your keys and a smaller wallet in it. (Or wallet and smartphone.)

And then just upgrade as you can.

And remember, as at least one other person has in their .sig file here on the forum, while Kilts may shrink with age, your sporran and accessories last forever!