(CNN/KDKA) — Dollar Tree for decades has sold most of its products for a dollar. Now it’s adding products for higher prices at thousands of stores.

The company said Tuesday that it will begin selling items at $1.25 and $1.50 at some locations for the first time. It will also add $3 and $5 items to more stores, expanding on a prior strategy in recent years to move away from only offering goods for $1.

READ MORE: National Weather Service Determines EF-1 Tornado Touched Down In Hampton Twp.

Dollar Tree has a treasure hunt-like atmosphere in stores and caters to suburban, middle-income shoppers. It carries primarily seasonal goods, toys, stationary, home decor, kitchenware and party items. The company said its latest moves to raise prices will allow it to expand its assortment and introduce new products.

Dollar Tree CEO Michael Witynski also told the Wall Street Journal that the addition of items above $1 was in part a response to rising costs the chain is facing.

Dollar Tree has tested selling items at $3 and $5 in dedicated “Dollar Tree Plus” sections at hundreds of stores since 2019. By the end of 2024, Dollar Tree will have these sections in at least 500 stores, the company announced Tuesday.

There are 13 Dollar Tree locations in the Pittsburgh region.

In some of the pages for the Pittsburgh locations, Dollar Tree still says “At your local Dollar Tree, every item is $1 (or less) each!”

Dollar Tree, which also owns the Family Dollar chain, has rolled out a new “combination store” concept that features elements of Dollar Tree and Family Dollar outlets and sells a mix of merchandise. The company said Tuesday that it will bring its higher-priced merchandise to up to 3,000 of these locations over the next several years.

READ MORE: Judge Declares Mistrial In Retrial Case Of Former Restaurant Owner Accused Of Sexual Assault

Dollar Tree has faced pressure from Wall Street in recent years to increase prices above $1. In 2019, an activist investor took a stake in the company and pressed the chain to raise prices. The group ended its fight after Dollar Tree announced it planned to test different prices.

More recently, higher costs have taken a toll on Dollar Tree. The company in August slashed its profit forecast for the year, citing the impact of higher freight costs. Retailers across the industry have faced higher costs during the pandemic, but Dollar Tree’s fixed $1 price strategy has given it less flexibility than other chains to raise prices to offset inflation.

“The Dollar Tree banner is more sensitive to freight cost than others in the industry. Our products have lower price points than other retail importers,” Witynski said on an earnings call last month.

Dollar Tree’s stock surged around 15% Wednesday, as some investors bet the moves will help the chain mitigate cost increases.

“While the $1.00 price point has been devoutly maintained for decades, inflation is likely to remain higher for longer forcing the tough but necessary decision to adapt the model,” Michael Montani, a retail analyst at Evercore ISI, said in a note to clients. Higher prices will help Dollar Tree manage “margin pressure from inflation.”

Raising prices does come with the risk of turning off customers, however, especially for chains targeting shoppers on tighter budgets.

“Dollar Tree should benefit from changes in its pricing strategy, although we worry about the customer reaction, given their high sensitivity to prices,” Joseph Feldman, an analyst at Telsey Advisory Group, said in a note Wednesday.

MORE NEWS: COVID-19 In Pittsburgh: Allegheny County Reports 330 New Cases, No Additional Deaths

(TM and © Copyright 2021 CBS Broadcasting Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. CNN contributed to this report.)