Not likely. PWs almost universally plummet in value shortly after their release (Jace, the Mind Sculptor being an exception). And both of those are reprints: extra bad for value.
As a point of reference, Jace, Memory Adept was once over $40, Tamiyo, the Moon Sage $30. They haven't even left rotation yet, and look at the current prices.
so then, it would take a LOOOOOOOOONNNNNNNGGGGGGGG time for them to go up in value, if at all. Why did they drop so much?
Will the value of the planeswalkers ever go up? If so, I'd like to get them when there easy to get.
It's a tough call. Generally id say "no". Jace, the Mind Sculptor is an exception because of how supremely powerful he is. The core set planeswalkers are pretty worthless. Older planeswalkers that are used in Legacy (nothing really comes to mind besides JtmS).
Jace is at $100 now, there has been talk of unbanning him in Modern. He'd better be reprinted in Modern Masters 2 because you'll be looking at a $200 card.