| Philadelphia | Heerlen | |
| Tennis court rent (1 hour on weekend) | USD 23.50 | USD 37.29 |
| Mid-range restaurant | USD 50.00 | USD 74.58 |
| Apartment (3 bedrooms) outside of centre | USD 1 760.00 | USD 813.56 |
| Gasoline (1 liter) | USD 0.99 | USD 2.42 |
| Water bottle (0.33 liter) | USD 1.48 | USD 5.42 |