A potential bidder carefully examines pieces of Tuna in order to ascertain the quality and to estimate its price ahead of the Tuna auction at the Tsukiji fish market on February 28, 2012 in Tokyo, Japan. (Photo by Daniel Berehulak /Getty Images)

Everyone wants to get something for nothing - whether it's a lucky upgrade that means you can turn left when you get on a plane instead or heading off into the economy seats, or even getting a few extra features thrown in for free when you buy a new car.

As some of the sharpest businesses around, no-one understands this quite as well as casinos and that's why they all have a system that they call comps. It's short for "complimentary offers" and these are special treats specially designed to reward you for your loyalty to the casino in question. They're basically bonuses.

Lancaster Gate station displays signage after being rebranded “Ratchet and Clankaster Gate” as the PS5 goes on sale in the UK, on November 19, 2020 in London, England. The first generational upgrade to Sony's line of Playstation consoles since 2013, the launch has seen pre-orders sell out within hours and websites crash as retailers attempt to keep up with demand. (Photo by Alex Davidson/Getty Images)

A citizen rides in smog on December 20, 2016 in Jinan, Shandong Province of China. Air quality index (AQI) readings exceeded 400 and some schools have suspended classes in Jinan. (Photo by VCG/VCG via Getty Images)

Patty and Allen Eckman have been creating wonderful high detail works in their hand made acid free cast paper sculpture since 1988 and they have become internationally recognized as not only masters in the medium but also the only masters of their medium. the Eckman Method® of museum quality fine art cast paper sculpture is a trademark of Eckman Fine Art Inc. and Allen and Patty Eckman. From this page you can navigate through the One-of-a-Kind and Limited Edition works of the artists, which encompass the different categories of works Patty and Allen have done individually as well as some they have done together.

Andrey Rublev shouts at line judge while playing against Alexander Bublik of Kazakhstan in their semifinal match during the Dubai Duty Free Tennis Championships at Dubai Duty Free Tennis Stadium on March 01, 2024 in Dubai, United Arab Emirates. (Photo by Christopher Pike/Getty Images)

Blule is the brand of French illustrator/designer, Clementine, who currently resides in Australia and has worked as an industrial designer for companies such as Fila, and L’Oreal among others. She starts every image with a pencil sketch on handmade Indian watercolor paper sheet and uses high quality French watercolor paint to achieve the desired effect.

The Tianzi Hotel with the shape of Chinese deities Fu, Lu and Shou is pictured on November 20, 2017 in Langfang, Hebei Province of China. The 41.6-meter-tall Tianzi Hotel has an exterior of Chinese Sanxing, whose names are Fu, Lu and Shou with the qualities of prosperity, status and longevity in traditional Chinese culture, in Langfang city. (Photo by VCG/VCG via Getty Images)