Here are some popular all-you-can-eat sushi options in Edmonton:

1. Sushi Cafe Madang - Casual sushi and Korean restaurant with good variety, around CA$20–30. Located at 8903 83 Ave NW.
2. Zen Sushi - Offers all-you-can-eat sushi and Japanese meals for around CA$30–40. Located at 7618 104 Street NW.
3. Kyoto Japanese Cuisine - Simple sushi restaurant with all-you-can-eat lunch options around CA$20–30. Located at 8709 109 St NW.
4. Watari - All-you-can-eat Japanese restaurant with made-to-order sushi and grilled fare, prices around CA$40–50. Located at 10108 124 St.
5. Sushi Wave - Sushi restaurant with casual dining, around CA$20–30. Located at 10812 124 St.
6. Washoku Bistro - Sushi and Korean Japanese fusion, around CA$20–30. Located at 10702 124 St.
7. Tatsu Sushi + BBQ - Combines all-you-can-eat sushi with Korean BBQ for around $40. Located downtown at 10163 109 St NW.
8. Sushi Toshi - All-you-can-eat menu with sushi and grilled items, pricing about $40–43 depending on day. Located in North Edmonton.

These spots offer a range of prices and styles for all-you-can-eat sushi experiences in Edmonton, from casual to slightly upscale, some combined with Korean BBQ as well.