Auction multiple items at once using different pricing schemes.
I loved the idea of Igor's Mass Auction, but it had a few bugs in it and a few features I wish were incorporated.

I completely rewrote the addon trying to keep the same look and feel from Igor's.
- Price schemes can be added by authors much more easily.
- I wanted to allow pricing schemes to not add an item if they have no data for initial bid or buyouts.
- I decided not to use the one-click feature, as alt-clicking replaces it.
- A max of 18 auctions still exists, but if people demand more, I'll create a scrolling window, and add more!  (With more than 18 auctions, this might be a bit harder to review your auction prices, so I didn't implement this yet)
- Fixed the coloring of items in your bags (I do not know if this will work with all those bag addons or not)

Pricing Schemes:
- Default
Initial bid and buyout are set to the default initial / buyout values.
- All Same price
If you leave the number of items empty, values are set for the entire stack.
Or enter a number, and the values are set for each # of items in the stack.
- Value Multiplier
Lets you set Starting / Buyout prices as a percentage of different selections
Basic selections are: Vendor value, Default starting price, Default buyout price, and the Starting price you set.

Usage:
- Price Scheme: Select the pricing scheme addon you wish to use to get starting and buyout prices for.  Each scheme may have several options to choose from.  This scheme will be used when adding new items to MultiAuction; all items currently added to MultiAuction will not have their prices changed.
- Set All Prices:  This will attempt to set all items currently added to MultiAuction with the selected pricing scheme.  This is useful if you were adding items using another pricing scheme, and wish to change all item prices using another scheme.
- 12H / 24H / 48H:  This will set durations for all items to 12, 24, or 48 hours respectively.

Notes:
- If a pricing scheme does not supply a starting or buyout price, the item will not be added.
- ValueMultiplier can fallback to the default values in a pricing system does not return price values for it.
- Once an item is added to MultiAuction with whatever price scheme you use, you can still manually change the starting and buyout prices.
- To add part of a stack of items - Split the stack into your backpack first and then add the stack to the auction
- You can alt+click items from your backpack to add them as well