Renderforest currently has a sale of up to 51% off selected plans, which is the lead offer on this page and best if you are buying one of the eligible professional video plans that falls into the 51% bracket. That sale is the biggest single markdown shown and is aimed at anyone buying a selected plan. It is a website only offer and applies where the selected plan is included in the promotion.
Small one off purchase under $100: If you are buying a single low cost plan or trying the service on a small value purchase, the up to 51% off sale still applies when the plan is one of the selected items. On a $80 plan, for example, 51% off leaves a final price of $39.20, so you save $40.80. The newsletter signup can be worth joining for first time customers who want future promos, but it does not replace the current public sale when a plan is already reduced.
Typical yearly subscription around $200: Use the sale or the up to 40% off yearly subscription depending on eligibility. On a $200 yearly plan, 51% off (if that plan is one of the selected items) reduces the price to $98, saving $102. If the 51% level does not apply to that plan but the up to 40% yearly saving does, then 40% off gives a final price of $120, saving $80. Choose the one that applies to the specific plan you want.
Buying a Pro or Business tier yearly membership: The 20% off Pro or Business yearly membership is explicitly for those tiers and cannot be used with other offers. If you have a $300 Pro yearly plan and the 51% sale does not cover Pro, 20% off leaves you paying $240 and saves $60. If that Pro plan is included in the 51% selected plans sale, the sale price of $147 saves you $153 and is the better choice.
Buying multiple items or bundles: The offers are stated as site promotions on selected plans or yearly subscriptions. If you are assembling multiple different purchases, check which specific plan each discount attaches to; the 20% offer states it cannot be combined with other offers.
When choosing, take whichever offer gives the lower total on the exact plan you intend to buy. If a selected plan is listed in the up to 51% sale, that will usually beat the 40% yearly or the 20% Pro/Business deal. Respect the 20% offer term that it cannot be used with any other offer; otherwise use the larger applicable percentage for the single plan you are buying.