Then tell your html software to search and replace all instances of that sku number from old to new price. Submitting an Announcing Announce only one page per day to each search engine. If you have 60 web pages it will take 60 days. Just be sure to track which pages have been announced to which search engines. If the search engine specifies that only the home page can be submitted, follow the rules, you have been cookied.
Summary Get more than one site, mirror the content or put different product categories on each.
Just be sure to get domain names with keywords in them. Cross link everything with invisible pixels. Write two hook pages a week focusing on both generic product categories and specific makes and models. Wait at least 24 hours before submitting another page from the same domain to the search engines. There, in less than a year, you've gone from one site with 10 pages, to six sites totalling 60 pages, plus 100 hook pages, plus 100 database pages, to a grand total of 260 pages working for you in the search engines.