I am not a huge ebay seller, but I've learned a great deal from this forum which I've taken a note of for possible future sales.
Listing Issues
1. Take as many clear photos as you can. The more photos you have that show the actual condition of the bag, the less you'll have a problem down the road w/ a buyer claiming "significantly not as described" (SNAD) claim. Make sure you watermark your photos to prevent others from copying your list.
2. Since your bag is a high ticket item, block bidders w/ negative or 0 feedback. If you want to allow them to bid, I would write that they contact you before trying to bid so you can manually allow 0/negative fb member based on your judgment.
3. Make sure to either put a reserve or start at the price you would not mind letting it go for. You could also do BIN. The reason I suggest this is because I am not sure if there is a huge demand for denim patchwork speedy. You can ask folks at Louis Vuitton, but personally, I don't see a fierce bidding war going on with the bag. But it could be a HG bag for some and they wouldn't mind paying a high price on it.
That's all I can think of regarding listing an item.
Sending the Item
1. Try to use a good shipping method. Don't bend over backwards to save the buyers w/ shipping fee by sending it w/ first class mail, etc. Use a secure method, period, be it USPS, UPS, Fedex, whatever it may be. Definitely use insurance with signature confirmation.
2. Use a security tag. If you do a search on "security tag" or "security lock" you'll find a bunch of information. The purpose of security tag is to prevent bait & switch. Buyer can examine/get the bag authenticated while the tag/lock is still intact. If the buyer determines that bag is fine and she will keep it, she will cut off the tag or get the combo # from you. After that, there is no refund or return.
3. Document your shipping process. Take photos of how you packed it, etc. Keep all the receipts. The new scam nowadays seems to be the buyer claiming the box was empty or that it was filled with a wrong item. I haven't done this or seen anyone do it, but I was thinking perhaps when you go to the post office, you put the item in and seal it in front of the post office worker. You can then write down the date & the weight of the package and the name of the post office worker if possible. I know legally this has no "witness" power, but better than nothing at all.
4. Also, try to send the item to a "confirmed address." Do not give in to a buyer asking you to ship it to a different address, etc. It's just not very safe, IMO.
That's all I can think of regarding sending the item.
Always ask questions here if you are in doubt, the folks here know SO MUCH and very helpful.
Oh, and as far as the "fair price" goes, I would try to find the same bag on ebay w/ the similar condition and see how much it goes for. You can also ask Louis Vuitton folks for more insight on this.
Good luck.