If you're a professional photographer or illustrator or designer who uses photos in their work? If so, there's good news. Google has chopped the price on the Nik Collection of photo editing software.

Previously, the collection of six separate plug-ins for Photoshop, Lightroom, and Aperture would run you US$100 (around £66) per app, or $499 (£330) for the full bundle.  Now, the entire package will only set you back $149 (£99).

The new bundle of software, which is comprised of the HDR Efex Pro 2, Silver Efex Pro 2 (above and below), Sharpener Pro 3, Color Efex Pro 4, Viveza 2, and Dfine 2 plug-ins will no longer be sold a la carte. However, any users who purchased any individual plug-in within the past five years will be able to download the rest for free. Furthermore, any users who shelled-out more than $149 on any Nik plug-in since February 22 will be refunded the difference. Affected users should receive an email from Google in the next few days.

When Google acquired Nik Software – the German company behind the Nik plug-ins as well as the popular photo-editing app Snapseed – last September, one of the first changes it made was to drop the price from $5 to free on the mobile version of Snapseed (available on Android or iOS) and integrate it with Google Plus.

When Google killed the desktop version of Snapseed recently, some feared the move might portend other Nik software falling victim to Google's appicidal "Spring Cleaning".