Depends on the size of the tiles.
2500 tiles
How many 60cm x 30cm tiles in a square meter?
11 tiles.
45.55
5.5
how many 300x300 mm tiles in a square metre
300 mm = 0.300 meter and 600 mm = 0.600 meter. The area in meters of each tile is therefore 0.300 X 0.600 = 0.180 square meter. The number of tiles require to total 1 square meter therefore is 1/0.180 = about 5.5. Therefore, no integral number of tiles will exactly fill the specified space, and no more than five will fit. If the 1 square meter has a very long and narrow shape, narrower than 0.300 meter, no tiles at all will fit.
600x300x7mm tiles fill a 20 feet container?
You would need 25 (5x5).
It will take nine 330 by 330 mm tiles to cover one square meter. The room is 144 square meters in area. 9X144=1296 tiles. With a 5mm grout.
75.25 tiles (assuming no part of a tile is wasted and leaving no allowance for space between tiles.) buy at least 10 extra. Math: 30.5 cm x 30.5 cm = 930.25 Square cm per tile. a square meter = 100 cm X 100 cm = 10,000 square cm 7 square meter = 70,000 square cm now divide.... 70,000 square cm / 930.25 square cm per tile = 75.25 tiles
The basic premise of your question is false. A lineal (or linear) metre of household tiles will NOT be more expensive than a square metre - unless they are gigantic tiles!