Whistler doesn't really have "cheap eats" but does have some more affordable options to the more expensive restaurants.

Do it yourself options:

IGA - located in the Marketplace

Upper Village Market - located in the  Upper Village, Intrawest Resort Building (will deliver groceries to your hotel)

The Grocery Store - located in the Village Square (will deliver groceries to your hotel)

Fast Food Options: (limited seating)

McDonald's is decorated very nicely - in the Marketplace

KFC -  next to IGA in the Marketplace

Domino's Pizza - behind the Marketplace next to 7/11 (no seating area, take out only)

Dups Burritos -  delicious Mexican that won’t cost a fortune - 604-905-0210 - 4368 Main Street #114 (next to Crepe Montagne)

Quiznos (subs) - behind the Marketplace across from  the 7/11

Splitz Grill - great place for burgers, behind the Marketplace across from the 7/11 (next to Quiznos)

Opa! has fabulous Greek gyros and more.  This was a favorite place.  Big portions. 

Subway - located behind the Conference Centre

Zogs Dogs - located near the Skiers Plaza in the village, across from Carleton Lodge, is a great outdoor place for hot dogs, and poutine

Casual Cafes / Deli:

Portobello across from the Fairmont Chateau Whistler has $4.75 coffee and pastry combo for breakfast and made to order sandwiches.

Ciao-Thyme Bistro - across from Fairmont Chateau Whistler is a good place for hot breakfast and lunch

Beetroot Cafe - breakfast and lunch options -in the Marketplace by IGA

Hot Buns Bakery - their cinnamon buns is a must try, located in Village Square behind La Brasserie

Wildwood - for breakfast and lunch - located in Function Junction south of Creekside - you'll need a car

Family Friendly:

Old Spagetti Factory - in the Village, underneath the Crystal Lodge good ol' family dining atmosphere

White Spot - hard to explain where this is but it's between the conference centre and the village bus loop

Pasta Lupino -  behind the Marketplace next to 7/11 - small place but good pasta dishes

Caramba - in Village North, diagonally across from the Gap store - food family restaurant

Bars and Sport Pubs:

Tapley's - great pub food - a bit run down but has different lunch and dinner specials daily, across the conference centre

Brewhouse - good pub food in Village North

Creekside Location: 

Dusty's is a good place for pub fare

BBQ Bob's by Nita Lake Lodge

Creekbread - great pizza!