Read the article and you have great suggestions.
I'd like to add to #5 - Share. I was thinking of having a Swap Meet for Scrapbookers. I'm not exactly sure how to organize or present this but if you have a group of friends that you craft / scrapbook with then invite them to bring their unwanted items to your next meeting and swap things out! You can also do a little Sale. I was thinking of doing this at January's meeting of my Friday night crop group. I've been sorting things out for several weeks now and have 2 boxes: swap & sell.
I'd also like to add a #6 to your list. Sometimes a good way to save money on scrapbooking is to buy "kits." I know your company and mine (no names mentioned) have scrapbook kits that have cardstock, decorative papers, embellishments (such as stickers or chipboard pieces). I believe your company also has an additional package of coordinating embellishments (such as a package with buttons, flowers, brads) with the correct colors to match the scrapbook kit.
Kits are great for new scrapbookers to take away some of the fear in putting something together.
Just a thought....