Here's the official e-mail from Amazon:
Due to a lack of availability, we will not be able to obtain the following item(s) from your order:
"Winsor & Newton Series 7 Brush Gift Set Includes 4 Small Rounds"
We've canceled the item(s) and apologize for the inconvenience. If you see a charge for the canceled item, we will refund you within 1-2 business days.
If you are still interested in purchasing this item, it may be available from other sellers. Please visit the detail page for this item below:"