It's just business.
If you wanted that Peavey head for $899 you should have bought it 4 months ago.
Or find a store that has them also and still has them priced at $899.
I own a store myself (not a music store), and this is normal, not unethical at all. <-- edti: I co-own a store

Everything you have in the inventory is an investment the store owner has to make. If you add it all up there is a lot of money invested in products that are in stock.
So if list prices of certain products rise, the sale prices will rise. This way a store can get a break and have more money income.
Okay, so this seems like a scam to the customer.
But most of the times it works the other way:
Most times a store buys a number of a specific item to have in stock. To get a good deal from their distributor. And they hope to sell it all before a new version of that product comes out.
If they still have some of that certain product in stock, the old version, they have to drop prices and in the end they may have to sell it with loss.
But in these case the customer isn't worried about a stores sales policy.
Then customers mostly go bragging around how cheap they got their product.
A store isn't a charity organization. Every square inch in the showroom and stockroom costs money. And each stores wants on every spot in their showroom products that sell well.
If you don't want to buy that product because the price is raised, the store owner and salesmen aren't going to lose their sleep on it. Another customer will come in one day and buy it at that price.
Unless you are a regular good customer you can negotiate on the price.
I give my regular customers often great deals. Customers that walk in for the first time I try to help as much as possible, and I hope they come back.
But again: I don't run a charity.
I've got to make a living too.
So you think you are cynical?
Try running a business or be a salesman.
THEN you will become cynical.
(Man, the stories I could tell.

)
I have had my share of difficult customers.
I sometimes spend a lot of time talking to customers that in the end end up buying nothing.
But I know that comes with the job, and I love helping people with questions about our products.
I am not a disgruntal sly salesman, at least I like to think so myself.

I also get a lot of satisfaction from my job. I also have a lot of satisfied customers, which who I mostly have casual chats with besides business. And these people spread a good word around the area to give us a good reputation.
(Also I'm happy if I close my bookyear with a lot of profit which I can invest in offering my customers more in the next year.)
So GeddyFleaHarris, try to look at things from other peoples view sometimes.
I understand you don't like the price raises, as do I when I am a customer in another store.
Prices on all products will rise, that is inevetable (sp?). It's the economy.
My advice: keep looking out for great deals, and don't miss them.