| Content* | Price/system | Remarks | |
| Basic
|
16 complementary blocks, covering charges up to +/-3
|
$40.00 | *All systems comprise an extensive chart of common ions.
Prices do not include shipping and handling. There is, however, a 5% discount for orders larger than 10 systems Preferred payment method: PayPal account KembloX@yahoo.com Alternative payment method: certified check to B. Aurian-Blajeni |
| Advanced
|
28 complementary blocks, covering charges up to +/-4, for more extensive coverage of the ionic compounds, and a four-sided spinning top
|
$85.00 | |
| Teacher Edition
|
Same types of blocks as Basic, but larger blocks, for better visibility in large classrooms
|
$125.00 |
