
Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural
115 checks since Aug 20 · $37.75–$84.98
Price as of Nov 3, 2026, 10:47 a.m. EST. Not re-checked since. Prices and availability change.
Also works as a standard calculator Fast, accurate estimates Quick conversions
At the November 3 check, the price was $84.39, against a recorded range of $82.43 to $115.66 across 186 checks since July 24.
It has held that level for 3 days.
Dipp has not been able to re-check this price for 31 hours. The amount above is the last one we recorded, not today's price — the history below is what we measured while we could still read it.
Not buying today? Get one email if this price drops.
Price as of Nov 3, 2026, 1:48 p.m. EST. This price is older than 24 hours and has not been confirmed since. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.ca at the time of purchase will apply to the purchase of this product. As an Amazon Associate I earn from qualifying purchases.Prices and availability change.
This is Dipp's observed history, not every price ever offered on Amazon.ca.
The latest observations Dipp has stored for this product. These are periodic checks, not a record of every price Amazon displayed.
| Checked | Price |
|---|---|
| Nov 3, 2026, 1:48 p.m. | $84.39 |
| Nov 3, 2026, 12:47 a.m. | $84.39 |
| Nov 2, 2026, 9:47 a.m. | $84.39 |
| Nov 1, 2026, 8:48 p.m. | $84.39 |
| Nov 1, 2026, 6:48 a.m. | $84.39 |
| Oct 31, 2026, 7:47 p.m. | $84.43 |
| Oct 31, 2026, 4:48 a.m. | $84.43 |
| Oct 30, 2026, 3:48 p.m. | $84.43 |
| Oct 30, 2026, 2:18 a.m. | $84.43 |
| Oct 29, 2026, 1:47 p.m. | $84.43 |
| Oct 29, 2026, 12:47 a.m. | $84.43 |
| Oct 28, 2026, 8:48 a.m. | $84.43 |
Dipp’s recorded low is $82.43 (Sep 22, 2026). Get one email if it goes below that.
Nearest prices in this category, so today’s number has something to sit against.

115 checks since Aug 20 · $37.75–$84.98
Price as of Nov 3, 2026, 10:47 a.m. EST. Not re-checked since. Prices and availability change.

173 checks since Jul 24 · $139.99–$169.99
Price as of Nov 3, 2026, 10:47 a.m. EST. Not re-checked since. Prices and availability change.

207 checks since Jul 24 · $17.60–$42.99
Price as of Nov 3, 2026, 3:48 p.m. EST. Not re-checked since. Prices and availability change.

165 checks since Jul 24 · $19.99–$31.99
Price as of Nov 3, 2026, 11:47 a.m. EST. Not re-checked since. Prices and availability change.

201 checks since Jul 26 · $18.99–$23.99
Price as of Nov 3, 2026, 11:47 a.m. EST. Not re-checked since. Prices and availability change.

180 checks since Jul 24 · $19.99–$35.99
Price as of Nov 3, 2026, 12:47 p.m. EST. Not re-checked since. Prices and availability change.
The wider Office catalogue on Amazon.ca, each product with its own recorded price history.