Step 1 :Let the original cost of the bedroom suite be \(c\).
Step 2 :The original price after the $90\%$ markup is \(1.9c\).
Step 3 :The discounted price after the $5,000$ discount is \(1.9c - 5000\).
Step 4 :Since the discounted price is $30\%$ and $15\%$ less than the original price, we have the equation: \(1.9c - 5000 = 0.85c\).
Step 5 :Solving for \(c\), we get \(c \approx 4761.90\).
Step 6 :The original price is \(1.9c \approx 9047.62\).
Step 7 :Finally, applying the $30\%$ Mid-Summer Sale discount, we get the sale price: \(0.7(9047.62) \approx 2833.33\).
Step 8 :\(\boxed{2833.33}\) is the sale price of the bedroom suite.