Yes available.

Curious, are u a G-shock collector? How did u get the watch?

The price really depends on the condition of the watch. The problem with jelly & white straps is that they tend to yellow over time and it's difficult to find replacement straps. Is yours Worn, BNIB, still with tag, papers, etc? The retail price was somewhere around 23000JPY. It's not that popular in Japan but has a bigger following with G-Men outside of Japan. The 8200 is generally more popular than 9900.

I recently saw one in mint condition, never worn before, asking for USD450. That's a bit on the high side.

I've seen another mint DW-9900 with box & papers sold for USD380. I personally know someone who purchased one for USD300 and everyone thought it was a bargain. There's really no fix price to put on such a piece.

Malaysian G-Men are still stocking up on the Final Edition GW-200Z Frogman (retails about USD380) or saving up for the newer GWF-1000 series which retails for more than the price of a entry level Tag Heuer. Check out the price sold here.

Final Edition GW-200Z

More Here from a fellow G-Men.

My advice if you are seriously planning to sell it, would be to look for a foreign buyer (in watch forums), put a price to test out the water, and be patient coz it wont sell overnite, but they do get better response from foreign G-Men.

Good luck mate. Cheers.