WHAT TO BUY and WHAT NOT TO BUY AT WWoHP:
I was thinking about the deals and rip-offs at the park and thought I'd make a list of the best and worst items to buy...
Good buys:
T-shirts: The park has a lot of cool and unique t-shirts to choose from, and I feel they are at a reasonable price. Considering I bought one at Hot Topic for $22, a $25-30 price tag is not bad for something that is exclusive to the WWoHP and of such good quality. I purchased the Gryffindor Quidditch Jersey-style shirt, and it feels strong and sturdy. They seem like they will last for a long time. They have shirts for the serious Potter fan, and even for the theme park fan (WWoHP logo).
Pygmy Puffs: Even though they were raised by $2, at $15, they are worth it. They are a fun and canon item that come with a little show bundled into the modest price. Other plushies in the park go for $25-30, and these are not made from lesser materials or quality. They are flying off the shelves, so if you're lucky enough to see one, snag it!
Mugs: I saw many cups and mugs at decent prices. Most mugs in theme parks range from $16-25. Two that I looked at (Have You Seen This Wizard?, Dumbledore's Army) were in the price range of $9-12 and had main characters on them. These would make a good gift, or a nice addition to any collection.
Honeydukes Candy: The candy from Honeydukes that I consider worth it is the kind that can be converted into a decoration. They have jars of candy (mostly hard candies) that have the Honeydukes logo on it, and some others (like the Pepper Imps) that just have the product's name on it. These are not only edible, but pieces very worthy of decoration or re-use. You could easily refill it with another candy and display it in your house.
Chocolate Frogs and Bertie Botts: Both of these go for $10. Their packages are very authentic. They look exactly like their counterparts from the movies. The Bertie Botts Every Flavor Beans don't come with much candy, but it is an adorable decoration or collector's item for any fan. Even my brother (who has read the books and watched the movies, but is only a very casual fan) was tempted to buy them. The frogs come with a lenticular card of one of the founders, and also a very big and heavy solid chocolate-shaped frog. These are not like the cheap ones they sell when a movie comes out. These are the real deal.
Lanyards: They also sell lanyards made to look like House ties. They come in each House's colors, and have a plastic slot for an I.D. or ticket. This is ideal to keep track of your tickets throughout the day, or to carry home to use at work.
Bad Buys:
Harry Potter Movies: The movies that they sell are rediculously over-priced. I looked at one of the Sorcerer's Stone DVDs to check out the price, and saw they were charging $20 for it. You can easily find these at Sam's or Wal Mart for $7-9. Also, you could take your $20 and put it towards the Ultimate Edition of SS if you really wanted some bang for your buck.
Marauder's Map: For $70, you get one Marauder's Map set behind glass. The same map is sold from the Noble Collection online for half the price, but unframed. So it depends on if you want it framed.
A Note on Butterbeer:
Most everyone will try Butterbeer inside the WWoHP. But before buying, consider whether the stein is worth it for you. It is $9.50 to buy the stein with regular Butterbeer in it, and $10.50 for the frozen beverage. If you're a die-hard fan who is there for a short amount of time, but looking for a cool souvenir, get it. But if you're a casual fan who isn't planning on coming back soon, pass. You can easily get a smaller cup for $3. The stein is ideal for someone who is on an extended vacation and plans to visit the land often, or for someone with an annual pass who will be wanting refills.