What is the difference between "Price Deal" and "Price-pack Deal" in the sales promotion? What are the advantages and disadvantages of both?

Price deal is all about negotiating a price for the product , Pack deal will have other product or services attached to the product up for sale.

In my opinion the difference of the two is that when you say Price deal it is between how the buyer and the seller deal on how much the product will cost until they meet the right price and when we say Price pack deal it is that inside that package there were two or more product with a lower price and it means that you save money