Yes, buying Apple stock may be the right move if you have a reason to believe that the price of the stock will keep climbing. Apple has some very popular products such as the iPhone that should keep the price of their stock from dropping. If they have new products coming out, the stock price may rise even more.
Apple has a monopoly on so many niches in the entertainment and communications industries. Buying at this price is a highly intelligent move, as the company literally has nowhere to go but up. As more technological advances are made, Apple is sure to be in on the next big thing and profit nicely. The company isn't known for losing money.
No, I don't think Apple's stock is priced correctly. It is likely overpriced because of all the iPhone purchases in response to the popular Pokemon Go app. Give it a year or so, and it'll likely go down in value. But perhaps it's a "buy" for short term stock trading.
No, now is not the time to buy AAPL because it is on the rise and could prove to be more expensive when in demand. Buyers should wait until the cost is lower to maximize their potential gain in the long run and enhance their stock portfolios at a later date.