A "placeholder price" refers to an estimated or temporary price put in place until the final price is determined. It is usually used to reserve or hold a product or service temporarily until a specific price is finalized. Full definition
Details regarding the PlayStation Now pricing scheme have come to light and unless they're just placeholder prices for the duration of the Beta, it could spell the death of service before it even hits the ground. (n4g.com)
Although Nintendo has yet to officially announce the console's pricing details, prices mentioned by the retailers do not look like placeholder prices. (segmentnext.com)
Thankfully, that seems to have been just a placeholder price for Ford's parts network before the cars went on sale in late 2015, because while we were at a local Ford dealership, we found out that they go for a lot less money. (hotrod.com)