It depends on the quality the customer requires.

Acrylic is the material name — polymethyl methacrylate (PMMA).
Plexiglass, Perspex, and similar names are actually brand names for acrylic sheets.

Traditionally, branded acrylic sheets like Plexiglass are more expensive due to their stable optical performance, weather resistance, and strict quality control.

However, this is no longer always the case.

Over the past few decades, with the advancement of manufacturing technology and equipment, many non-branded acrylic producers have been able to manufacture high-quality sheets that meet — or even exceed — the standards of some branded products. Today, acrylic sheets can be customized to meet a wide range of quality requirements.

So, which is cheaper?

If the customer is focused on cost-effectiveness and doesn’t require high-end specifications, non-branded acrylic sheets are usually more affordable.
If the application involves strict standards — such as in medical, aerospace, or architectural use — branded sheets might be more suitable, but they come at a higher price.

Ultimately, pricing depends on:

• The required quality level

• The specific application

• Thickness, transparency, and durability requirements

• Whether any certifications or testing reports are needed

Which Is Cheaper, Plexiglass or Acrylic? It Depends on What You Need
There’s no absolute answer to which is cheaper. It all depends on customer needs. After decades of technical progress, high-quality non-branded acrylic sheets can now rival — and sometimes surpass — branded materials, offering greater pricing flexibility.