This is used to send shop inventory information to the client.

Offset Type     Name             Description
------ -------- ---------------- ------------------------------
 0000  BYTE     cmd
 0001  USHORT   blockSize
 0003  UINT     vendorID
 0007  BYTE     numItems
       loop(numItems)
       {
       UINT     price
       BYTE     length           length of text description
       CHAR[]   name             item description
       }

Note: This packet is always preceded by a describe contents packet (0x3c) with the container id as the (vendorID | 0x40000000) and then an open container packet (0x24?) with the vendorID only and a model number of 0x0030 (probably the model number for the buy screen)